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4 Sheets-Sheet 1. (No mm P. R. DBF. DHUMY.

ARMOR PLATE.

No. 530,024. Patented Nov. Z7, 1894.

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P.YR. DE F. DHUMY. ARMOR PLATE.

110.530,024. Pa'ented Nov. 27, 1894.

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P. R. DE F. DHUMY. ARMOR PLATE.

No. 530,024. Patented Nov. 27, 1894.

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ARMOR PLATE.

No. 530,024. Patented Nov. 27, 1894.

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UNITED STATES PATENT OEEICE.

PAUL R. DE F. DHUMY, OF CHICAGO, ILLINOIS, ASSIGNOR OF SEVEN-TENTHS TOANDREW S. WORK, OF SAME PLACE.

PLATE.

SFECIFICATION forming part of Letters Patent No. 530,024, dated November2'?, 1894.

Application filed March 6, 1894.

To @ZZ whom it may concern.-

Be it known that I, PAUL R. DE F. DHUMY,

a citizen of the Republic of France, residing at Chicago, in the countyof Cook and State 5 of Illinois, have invented certain new and usefulImprovements in the Method of Constructing Armor-Plates and CertainParts of Machinery, of which the following is a specication.

This invention relates toimprovements in the method of constructingplates which may be used for armor plates for iron-clad vessels, andalso for parts of machinery, such as shaftings, crank-shafts, andy-wheels; and r 5 consists in certain peculiarities of the construction,novel arrangement, and form of the various parts thereof, as will behereinafter more fully set forth and specifically claimed.

The objects of my invention are first, to provide a means by which theproduction or manufacture of armor-plate can be accomplished with aminimum of cost and labor, and in a much shorter time, than by themethod z5 ordinarily employed; and second, such a construction, Whichwith slight changes, is applicable to parts of machinery, such as largeshaftings, iiy-wheels, &c.

In order to enable others skilled in the art 3o to which my inventionpertains to make and use the same, I will now proceed to describe it,referring to the accompanying drawings, in which-- Figure 1, is avertical sectional view of a portion of the bodyof a vessel, showing theconstruction of my armor-plate and the manner of securing the samethereto. Fig. 2, is a detail perspective view of a portion of one of thesections of the plate and a part of its 4o frame. Fig. 3, is aperspective View of aseotion of the plate,showing it secured togetherand ready for its frame, illustrating a modification therein, and Fig.4, is a similar view of a section of the plate, showing the exterior andinterior plates or caps and connecting parts removed. Fig. 5, is aperspective view of the exterior plate or cap detached. Fig. 6, is aperspective view of the inner plate or cap detached. Fig. 7, is aperspec- 5o tive view of one of the sections of the plate,

showing it ready for its frame, and illustrat- Serial No. 502,484. (Nomodel.)

ing another modification therein. Fig. 8, is a perspective detail view,partly in section, of one of the sections of the plate and its frame,With the exterior cap removed. Fig. 9, is a detail perspective view ofthe exterior cap used in the modification shown in Figs. 7, and 8. Fig.10, is a sectional view, taken on line 10, 10, of Fig. 8, showing themethod of securing the cap to the transverse slabs. 6o Fig. 11, is adetail perspective view of a portion of one of the sections of theplate, showing a modification in the manner of securing its face plateor cap to the transverse slabs. Fig. 12, is a view in side elevation ofa portion of afly-wheel, embodying my invention. Fig. 13, is a sectionalview thereof, taken on line 13, 13, of Fig. l2. Fig. 14, isa plan viewof Fig. 12. Fig. 15, is a view in elevation of a portion of one of thespokes of the fly- 7o wheel. Fig. 16, is a similar view of a portion ofthe hub. Fig. 17, is a similar view of another part of one of the spokesof the iiy- Wheel. Fig. 18, is a view in elevation of another part ofthe hub. Fig. 19, is a perspective view, partly in section, of a portionof a crank-shaft, showing my invention embodied therein. Fig. 20, is alike view of another part thereof, and-Fig. 21, is a perspective view ofa portion of the same.

Similar letters refer to like parts throughout the different views ofthe drawings.

A, represents a cap or exterior plate of steel or metal of any desireddimensions, but preferably rectangular in form. The inner surface ofthis plate is provided with a number of transverse grooves a, andcorresponding projections d', within which grooves and against the endsof the projections fits and rests a series of alternately wider and nar-9o rower metal slabs B, which slabs are provided at suitable points withholes b, and b', so that the said holes or openings shall be in a linedrawn across the slabs B, or transverse plates.

By reference to Fig. 1, of the drawings, it will be seen that the holesb', in every alternate slab is larger in diameter than the holes oropenings b, in the intervening plates. The slabs B, and the plate A, areplaced together,

as shown in Figs. 1, and 2, and the frame conroo sisting of a series ofslabs or sheets C, in the shape of nested boxes is placed around thesame, and the exterior plate A, is held in position by means of thebolts C', which pass through the sides of the frame C and throughregistering holes in the projections a' and wider slabs B. The rearportion or opposite side of the frame C, from the plate A, is providedwith openings or seats c, for the reception of bolts D, which passthrough the backing D', and are secured within the hull of the vessel.The frame C, is also provided at suitable points to correspond with theopenings b, and b', with similar openings b2 through which melted metalis poured into the openings b, and b', of the slabs B, Where when itbecomes cool it will join the slabs into a compact and almost solidmass. Between the rear side of the frame G, and the backing D', isplaced a series of tubes E, havin g within them similar tubes E',between which is placed suitable packing. These tubes are to furnishresistance to the force of the projectile thrown against the plate A,and as is Well known greater strength is attained by the cylindricalform of the tubes, and by having one within the other, if the outer oneshould become broken, the' inner one will still resist the force. It isobw'ous that if the plate A is destroyed by a projectile, it can bereadily removed, and a new one replaced. It is also obvious that byemploying the series of slabs B, placed transversely with the plate A,greater strength is acquired, and as the slabs are divided one from theother, that the force of the projectile striking against the plate A,will be distributed, and thereby rendered less effective. The frames C,are united together on their inner surface by means of suitable boltsC2, or in any desired manner.

In Figs. 3, to 6, inclusive, I have shown a modification of theconstruction of the armorplate, in which the alternate slabs B', arefitted into grooves a, of the plate A', as above described, and aresecured together by means of bars B5, extending across the group of slabs atpoints preferably about midway between their front and rear ends; whilethe projections of the. exterior plate or cap A'v may be secured to thewider slabs B' by plain bolts or keys, or by means of meltedk metalinserted in the openings a2, passing transversely therethrough. Thatportion of the slabs B', in this modification adjacent to the vessel isprovided with a cap or interior plate A2, having recesses a3, andcorresponding projections a4, which unite with projections a5, andrecesses a6, at the rear edges of the slabs. Transversely to the saidrecesses and projections the slabs are formed with recesses a7, withinwhich tits the transverse extension as, on the interior cap A, or plate.When the caps or plates A', and A2, and slabs B', are united, as shownin Fig. 3, they will form a compact section, which may be inclosed in aframe, as before described and secured to the vessel.

In Figs. 7, to 10, inclusive, is shown still another modification, inwhich the slabs B2,

are placed transversely against the in ner su rface of a series of slabsA3, which form the exterior plate in this case, and which latter namedslabs are formed with grooves a, and for the reception of the ends ofalternate slabs B2, as shown. The slabs B2, are held together by meansof bars or melted metal inserted in the openings e, which unite themtogether, and with the inclosing frame C, or box. The series of slabsA3, forming the exterior cap or plate is secured to the series of slabsB2, by means of bars or melted metal d5, Which are passed transverselythrough the openings d6,in the projections di, of the slabs B2; andaround the united parts may be placed a frame C as before.

In Fig. 11, is shown another manner ot' securing the plate to thetransverse slabs, which consists in forming the plate A4, with dovetailmortises. c5, Within which is fitted correspondingly formed projectionsf, on the ends of the transverse slabs.

In Figs. 13, to 18, inclusive, I have shown the method of employing myinvention to the construction of the various parts of a iiywheel, whichconsists in laying a series of strips of metal of the requisite form, toform the periphery of the wheel, the spokes, and hub thereof, andproviding said strips with openings, through which is passed bars ormelted metal for securing them together.

In Figs. 19, to 2l, inclusive, is shown portions of a crank-shaft, inwhich the same method of construction is employed, as above described inthe fly-wheel.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. As an improved article of manufacture, an armor made in sections eachconsisting of ICO a group of slabs secured together and standingedgewise to the impact, a frame surrounding the sides and rear of eachgroup and consisting of a set of nested boxes, and means for securingthe frame to the slabs.

2. As an improved article of manufacture, an armor made in sections eachconsisting of a group of slabs secured together and standing edgewise tothe impact, a frame surrounding the sides and rear of each group, and anexterior plate secured to the outer edges ofk the slabs.

3. As an improved article of manufacture, an armor made in sections eachconsisting of a group of alternately wider and narrower IIO slabssecured together edgewise to the impact, and an exterior plate of thesize of the group having alternate projections and grooves on its innerface engaging the outer edges of the slabs, and bars passing throughaligned holes in the projections of the plate and the wider of theslabs.

4. As an improved article of manufacture,

an armor made in sections each consisting of a group of slabs securedtogether edgewise to the impact, an exterior plate of the size of thegroup secured to their outer edges, and

an interior plate of the size of the group secured to their inner edges.

5. As an improved article of manufacture, an armor made in sections eachconsisting of a group of slabs secured together edgewise to the impact,an exterior plate of the size of the group secured to their outer edges,an interior plate of the size of the group secured to their inner edges,a frame surrounding the sides and rear of the entire section, and meansfor securing it to the slabs.

6. As an improved article of manufacture, an armor made in sections eachconsisting ot a group of slabs secured together edgewise t0 the impact,an exterior plate composed of a number of slabs also secured togetheredgewise to the impact and standing in planes at right angles to theplanes occupied by the slabs, and means for connecting the exteriorplate with the group.

7. As an improved article of manufacture, an armor made in sections eachconsisting of a group of slabs secured together edgewise to the impact,au exterior plate composed of a number of slabs also secured togetheredgel wise to the impact and standing in planes at right angles to theplanes occupied by the slabs, means for connecting the exterior platewith the group, a frame surrounding the sides and rear of the group, andbars passing through the sides of the frame and transversely through theslabs in the group.

8. As an improved article of manufacture, an armor section consisting ofa group of alternately wider and narrower slabs set edge- Wise to the impact and secured together, an exterior cap consisting of a number ofplates also set edgewise to the impact and standing in planes at rightangles to the planes of the slabs, the rear edges of the plates beingformed with projections and grooves to engage the front edges of theslabs, said plates and slabs being formed with transverse openingsthrough their interlocking portions, and bars passed through the alignedopenings.

PAUL R. DE F. DHUMY.

